ProMods

So I just bought ATS today since it was on sale. I noticed that some people have videos on YouTube where they drive around the whole USA and even some videos in Canada. In base game however there are only a few states as I'm sure everyone's aware. How do I get the full USA and Canada? Do I need to buy the dlcs or are there mods that do the trick? If there are certain mods required, a link or where I can find them would be appreciated.

If you download ProMods for ATS it will add a part of Canada.
Other states and areas can be added with mods.

PS will you please stop posting these weird spam links in your posts and signature